:root {
  --detail-ink: #111;
  --detail-muted: #5f5f5f;
  --detail-fine: #d4d4d4;
  --detail-paper: #fff;
}

body {
  background: var(--detail-paper);
  color: var(--detail-ink);
}

.site-header {
  min-height: 66px;
  padding-top: 13px;
  padding-bottom: 13px;
  border-color: var(--detail-ink);
}

.brand {
  font-weight: 600;
}

.hero {
  width: min(100%, 1480px);
  margin-inline: auto;
  align-items: center;
  border-bottom: 1px solid var(--detail-ink);
}

.hero > * {
  min-width: 0;
}

.hero h1,
.hero-copy h1,
h1,
h2,
h3 {
  letter-spacing: 0;
}

.lead {
  max-width: 42rem;
}

.hero-panel,
.hero-card,
.card,
.price-card,
.sample-card,
.wide-card,
.video-card,
.soundcloud-card {
  border-radius: 0;
  box-shadow: none;
}

.btn,
.button,
.nav-cta {
  min-height: 44px;
  border-radius: 0;
}

.btn:focus-visible,
.button:focus-visible,
.nav a:focus-visible,
.brand:focus-visible,
a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 2px solid #1769ff;
  outline-offset: 3px;
}

.lesson-image {
  width: min(100%, 1480px);
  margin-inline: auto;
  overflow: hidden;
  border-bottom: 1px solid var(--detail-ink);
}

.lesson-image img {
  width: 100%;
  height: auto;
  max-height: 620px;
  object-fit: cover;
  object-position: center;
}

main > section:not(.hero) {
  border-bottom-color: var(--detail-fine);
}

.video-wrap,
.audio-wrap {
  overflow: hidden;
}

@media (max-width: 900px) {
  body {
    min-width: 0;
    overflow-x: hidden;
    font-size: 16px;
  }

  .site-header {
    min-height: 64px;
    padding-inline: 6vw;
  }

  .site-header .nav {
    display: flex;
    width: 100%;
    flex-direction: row;
    align-items: center;
    gap: 14px;
    margin-left: auto;
    padding: 0;
  }

  .site-header .nav > a:not(.nav-cta) {
    display: none;
  }

  .site-header .nav > a.brand {
    display: inline-flex;
    margin-right: auto;
    font-size: 11px;
    letter-spacing: 0.08em;
    white-space: nowrap;
  }

  .site-header > a.brand {
    display: inline-flex;
    margin-right: auto;
    font-size: 11px;
    letter-spacing: 0.08em;
    white-space: nowrap;
  }

  .site-header > a.brand + .nav {
    width: auto;
    flex: 0 0 auto;
  }

  .site-header .nav-links {
    display: flex;
    margin-left: auto;
  }

  .site-header .nav-links > a:not(.nav-cta) {
    display: none;
  }

  .site-header .nav .nav-cta {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  .hero {
    padding: 52px 6vw 48px;
    gap: 32px;
  }

  .hero h1,
  .hero-copy h1,
  h1 {
    font-size: clamp(2.35rem, 11vw, 4rem);
    line-height: 1.08;
    overflow-wrap: break-word;
  }

  h2 {
    font-size: clamp(1.85rem, 8vw, 3rem);
    line-height: 1.16;
  }

  .lead,
  p,
  li {
    font-size: max(1rem, 16px);
  }

  main > section:not(.hero),
  .band-inner {
    padding-left: 6vw;
    padding-right: 6vw;
  }

  .hero-panel,
  .hero-card,
  .card,
  .price-card,
  .sample-card,
  .wide-card,
  .video-card,
  .soundcloud-card {
    min-width: 0;
    padding: 22px;
  }

  .button-row,
  .hero-actions {
    display: grid;
    grid-template-columns: 1fr;
  }

  .btn,
  .button {
    width: 100%;
    min-height: 46px;
  }

  .lesson-image {
    aspect-ratio: 16 / 10;
  }

  .lesson-image img {
    height: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

.lesson-detail-page .lesson-detail-hero {
  width: min(100% - (2 * var(--acs-gutter)), var(--acs-container-wide));
  margin-inline: auto;
  padding-block: clamp(48px, 7vw, 88px);
  padding-inline: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.72fr);
  grid-template-areas: "copy media" "summary media";
  gap: clamp(28px, 4vw, 64px);
  align-items: start;
  border-bottom: var(--acs-rule);
}

.lesson-detail-page .lesson-detail-hero__copy {
  grid-area: copy;
  min-width: 0;
}

.lesson-detail-page .lesson-detail-hero__media {
  grid-area: media;
  align-self: start;
  height: clamp(520px, 50vw, 680px);
  min-height: 0;
  margin: 0;
  overflow: hidden;
  background: #f3f3f3;
}

.lesson-detail-page .lesson-detail-hero__media img {
  width: 100%;
  height: 100%;
  min-height: 520px;
  max-height: 680px;
  display: block;
  object-fit: cover;
  object-position: center;
}

.lesson-detail-page .lesson-detail-hero__summary {
  grid-area: summary;
  padding-top: 24px;
  border-top: var(--acs-rule);
}

.lesson-detail-page .lesson-detail-hero h1 {
  max-width: 12em;
  margin: 16px 0 24px;
  font-size: clamp(3rem, 5vw, 4rem);
  font-weight: 600;
  line-height: 1.04;
  letter-spacing: 0;
}

.lesson-detail-page :is(.eyebrow, .kicker, .section-label, .section-kicker) {
  font-size: 12px;
  font-weight: 600;
  line-height: 1.4;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.lesson-detail-page .lesson-detail-hero :is(.lead, .muted) {
  max-width: 42rem;
  color: var(--acs-ink);
  font-size: clamp(1rem, 1.35vw, 1.125rem);
  line-height: 1.85;
}

.lesson-detail-page :is(.hero-actions, .button-row) {
  display: flex;
  width: auto;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
  border: 0;
}

.lesson-detail-page :is(.btn, .button) {
  min-height: 48px;
  padding: 12px 20px;
  border: var(--acs-rule);
  background: #fff;
  color: #111;
  border-radius: 0;
  box-shadow: none;
}

.lesson-detail-page :is(.btn.primary, .button.primary) {
  background: #111;
  color: #fff;
}

.lesson-detail-page main > section:not(.lesson-detail-hero) {
  width: min(100% - (2 * var(--acs-gutter)), var(--acs-container));
  margin-inline: auto;
  padding-block: var(--acs-space-9);
  padding-inline: 0;
  border-bottom: var(--acs-rule-soft);
}

.lesson-detail-page main > section.dark {
  padding-inline: 0;
}

.lesson-detail-page .band-inner {
  padding-inline: 0;
}

.lesson-detail-page main > section:not(.lesson-detail-hero) h2 {
  font-size: var(--acs-h2);
  font-weight: 500;
  line-height: 1.2;
}

.lesson-detail-page main > section:not(.lesson-detail-hero) h3 {
  font-size: var(--acs-h3);
  font-weight: 500;
  line-height: 1.35;
}

.lesson-detail-page main > section:not(.lesson-detail-hero) {
  font-size: var(--acs-text-base);
  line-height: 1.8;
}

.lesson-detail-page main > section:not(.lesson-detail-hero) li {
  line-height: 1.8;
}

.lesson-detail-page :is(.card, .wide-card, .sample-card, .video-card, .soundcloud-card) :is(p, li) {
  font-size: var(--acs-text-base);
  line-height: 1.8;
}

.lesson-detail-page :is(.card, .price-card, .sample-card, .wide-card, .video-card, .soundcloud-card) {
  padding: var(--acs-space-5);
  border: var(--acs-rule-soft);
  border-radius: 0;
  box-shadow: none;
}

.lesson-detail-page :is(.band, .dark, .cta, .price, .price.recommended, .price-card.emphasis) {
  background: #fff;
  color: #111;
  border-color: var(--acs-line);
}

.lesson-detail-page :is(.band, .dark, .cta, .price, .price.recommended, .price-card.emphasis) :is(p, li, .muted, .small, .section-kicker) {
  color: #111;
}

.lesson-detail-page :is(.band, .dark) :is(.card, .price-card, .sample-card, .wide-card, .video-card, .soundcloud-card, article) {
  background: #fff;
  color: #111;
  border-color: var(--acs-line-soft);
}

.lesson-detail-page .price.recommended .badge {
  border-color: var(--acs-line);
}

.lesson-detail-page .price.recommended .button.primary {
  background: #111;
  color: #fff;
  border-color: #111;
}

.lesson-detail-page .lesson-detail-hero__media--composition img { object-position: center; }
.lesson-detail-page .lesson-detail-hero__media--dtm img { object-position: center; }
.lesson-detail-page .lesson-detail-hero__media--theory img { object-position: center; }
.lesson-detail-page .lesson-detail-hero__media--solfege img { object-position: center 42%; }
.lesson-detail-page .lesson-detail-hero__media--electroacoustic img { object-position: center; }
.lesson-detail-page .lesson-detail-hero__media--technology img { object-position: center; }

@media (max-width: 760px) {
  .lesson-detail-page .lesson-detail-hero {
    width: 100%;
    padding: 0;
    grid-template-columns: 1fr;
    grid-template-areas: "media" "copy" "summary";
    gap: 0;
  }

  .lesson-detail-page .lesson-detail-hero__media {
    height: auto;
    aspect-ratio: 4 / 3;
  }

  .lesson-detail-page .lesson-detail-hero__media img {
    min-height: 0;
    max-height: none;
  }

  .lesson-detail-page .lesson-detail-hero__copy,
  .lesson-detail-page .lesson-detail-hero__summary {
    padding: 28px var(--acs-gutter);
  }

  .lesson-detail-page .lesson-detail-hero h1 {
    margin-block: 12px 20px;
    font-size: clamp(2rem, 9.5vw, 2.5rem);
    line-height: 1.12;
  }

  .lesson-detail-page :is(.hero-actions, .button-row) {
    display: grid;
    width: 100%;
    grid-template-columns: 1fr;
  }

  .lesson-detail-page :is(.btn, .button) { width: 100%; }

  .lesson-detail-page :is(.grid-2, .grid-3, .cards, .card-grid, .step-grid, .mini-grid, .video-grid, .sample-grid, .price-grid) {
    grid-template-columns: 1fr;
  }

  .lesson-detail-page main > section:not(.lesson-detail-hero) {
    width: 100%;
    padding: var(--acs-space-8) var(--acs-gutter);
  }
}